CRN0

HST to KST cron converter

KST is currently 19 hours ahead of HST. Convert KST to HST

UTC-10
UTC+9
0 4 * * *

At 04:00 every day in Seoul.

Show timeline and next runs
Honolulu
00061218
00061218
Seoul
Each amber mark is a run time. The top strip shows Honolulu local time and the bottom strip shows Seoul local time, lined up so the same moment sits on the same vertical line. Shaded areas are night hours.

Same moment as “at 09:00 every day” in Honolulu.

HonoluluSeoul

Examples

HSTKST
0 9 * * *
0 4 * * *
0 9 * * 1-5
0 4 * * 2-6
*/15 * * * *
*/15 * * * *
0 0 * * *
0 19 * * *
30 2 * * 0
30 21 * * 0
0 0 1 * *
0 19 1 * *
0 */6 * * *
0 1-23/6 * * *
0 17 * * 5
0 12 * * 6
Every hour of the day
0 0 * * *0 19 * * *
0 1 * * *0 20 * * *
0 2 * * *0 21 * * *
0 3 * * *0 22 * * *
0 4 * * *0 23 * * *
0 5 * * *0 0 * * *next day
0 6 * * *0 1 * * *next day
0 7 * * *0 2 * * *next day
0 8 * * *0 3 * * *next day
0 9 * * *0 4 * * *next day
0 10 * * *0 5 * * *next day
0 11 * * *0 6 * * *next day
0 12 * * *0 7 * * *next day
0 13 * * *0 8 * * *next day
0 14 * * *0 9 * * *next day
0 15 * * *0 10 * * *next day
0 16 * * *0 11 * * *next day
0 17 * * *0 12 * * *next day
0 18 * * *0 13 * * *next day
0 19 * * *0 14 * * *next day
0 20 * * *0 15 * * *next day
0 21 * * *0 16 * * *next day
0 22 * * *0 17 * * *next day
0 23 * * *0 18 * * *next day

Questions

How do I convert a cron expression from HST to KST?

KST is currently 19 hours ahead of HST. Add 19 hours to the hour field, and shift the day-of-week if the time crosses midnight. For example, 0 9 * * 1-5 (weekdays at 09:00 HST) becomes 0 4 * * 2-6 in KST.

What is the time difference between HST and KST?

Hawaii Time is UTC-10 and Korea Standard Time is UTC+9. Right now kST is currently 19 hours ahead of HST.

Does daylight saving time affect HST to KST cron conversion?

Neither HST nor KST observes daylight saving time, so the 19 hours difference stays the same all year.

What is midnight HST in KST cron?

Midnight in HST (0 0 * * *) is 0 19 * * * in KST.

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